MRCOOL DIY 4th Gen Multi-Zone 5-Zone 48,000 BTU 21 SEER (9K + 9K + 9K + 9K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump

DIY 4th Gen Multi-Zone 5-Zone 48,000 BTU 21 SEER (9K + 9K + 9K + 9K + 12K) Ductless Mini-Split Air Conditioner and Heat Pump

The MRCOOL DIY Multi-Zone 48,000 BTU 21 SEER 5-Zone Ductless Heat Pump Split System delivers efficient, customizable heating and cooling for up to five rooms. With a 48,000 BTU condenser, this system includes four 9,000 BTU air handlers (ideal for spaces up to 350 square feet each) and one 12,000 BTU air handler (covering up to 550 square feet). Designed as a heat pump, this unit not only cools during hot months but can also reverse operation to pull heat from the outdoors, keeping your home warm in winter.

The MRCOOL DIY 4th Gen Multi-Zone system is designed for easy, do-it-yourself installation, requiring no special tools or professional training, which can save you thousands on installation costs. It features Quick Connect lines pre-charged with eco-friendly R-410A refrigerant, allowing homeowners to complete the setup without hiring an HVAC technician. Plus, step-by-step video instructions guide you through the process, making installation straightforward.

With its multi-season functionality, this unit cools in summer, heats in winter, and dehumidifies during humid months. You can monitor and adjust room temperatures using the MRCOOL Smart Controller app, the digital display on each air handler, or via Amazon Alexa and Google Home voice commands. A wireless remote is also included for easy operation.

Each of the five air handlers provides directional airflow control, ensuring even air distribution for maximum comfort. If forced cooling is needed, you can activate manual operation mode for system testing or emergency use. In auto mode, the unit adjusts airflow as needed to maintain your desired temperature, while the drying function manages humidity without excessive temperature changes.

For energy efficiency, Sleep Mode gradually adjusts the temperature over an 8-hour cycle, while the programmable timer lets you customize heating and cooling schedules to reduce energy consumption. The troubleshooting display provides error codes and maintenance alerts, including low refrigerant warnings and filter cleaning reminders to keep the system running at peak performance. In the event of a power outage, the system automatically restarts with its previous settings. To reduce noise and distractions, the mute function disables alerts and turns off the LED display.

The MRCOOL DIY Multi-Zone 48,000 BTU 21 SEER 5-Zone Ductless Heat Pump Split System offers high-performance, customizable climate control with DIY convenience—the perfect solution for homes requiring zoned heating and cooling with smart home integration.

• Easy DIY® Installation
• "Pre-charged DIY®
• Quick Connect Line Set
• Simple to Use
• Multi-room Comfort
• Energy Efficient DC Inverter
• 100% Sealed System
• Gold Fin® Condenser
• Eco Safe R-410A Refrigerant
• Smartphone App Controls
• Lifetime Technical Support
• Follow Me® Feature
• Low Ambient Cooling
• 16ft Line Set for each Air Handler

Your Satisfaction with MRCOOL is Guaranteed:

• 5 Year Parts Warranty, 7 Year Compressor Warranty
• Lowest Price Guarantee